Auto-traction device.



D. BLUMBERG.

AUTO TRACTION DEVICE. APPucATmN msn DEC. 1o, 1917.

Patented J an. 14, 1919.

3 SHEETSSHEET l.

IIIIII IIIIIIIIII Q1/mommy D. BLUMBERG.

AUTO TRAcHoN DEVICE. APPLlCATlON FlLED DEC. l0 19H.

Patented Jan. H, 191).

3 SHEETSSHEET 2.

i A TTURNEY Eatented 5am. 14, 19H3.

l:s SHEETS-SHEET 3.

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INZ/ENTOH B MJ@ UNTTED STATES PATENT orricn.

DAVID BLUMBERG, OF BRIDGEPORT, CONNECTICUT.

AUTO-TRACTION DEVICE.

:Leonesal Specification of Letters Patent.

Application led December 10, 1917. Serial No. 206,363.

To all whom t may concern:

Be it known that I, DAVID BLUMBERG, citi-.

zen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Auto-Traction lDevices; and I do hereby declare the following to be a full, clear, and exact description of the invention, 'such as will enable others skilled in the art to which itV appertains to make and use the same.

y invention relates to traction and nonskidding devices for motor vehicles, and it consists more particularly in providing carriers for the tread chains and a fixed track around which the carriers have freedom of motion.

Referring to the drawings:

Figure 1 represents a. wheel equipped with a track, chain carrier and tread chains in opera-tive position with respect to the tire;

Fig. 2 is an enlarged cross sectional view l'of the track and one of the chaincarriers;

Fig. 3 is Van enlarged broken plan view of one of the chain carriers:

Fig. 4 is a detail side elevation of one of the tracks;

Fig, 5 is a fragmentary view,` on a reduced scale, showing an inside elevatmhhpf the chain carrier section 5;

-Fig 6 is an enlarged cross sectional view of a tire and felly of a wheel, and tracks for the same;

Fig. 7 is an enlarged detail modiiied viewl partly in section of one of the tread chain connections 3 Fig. 8 is a view of a wheel showing a modified construction of the track and chain carn riers mounted on the telly;

Fig. 9 is an enlarged cross sectional view of a felly, tire and the modified track and chain carriers in operative position;

Fig. 9a is an enlarged broken sectional view of a felly, sectional view of one of the tracks and chain carriers showing the car rier Withdrawn .within the track;

Fig. 10 is an enlarged broken section of a track and chain carrier;

Fig. 11 is an enlarged broken section of the modified track and chaincarrier showing the chain sections being withdrawn from the track;

Fig. 12 is an enlarged broken section of the modified track and chain carrier showing the chain'sections being drawn into the track;

Fig. 18 is a side elevation of a truck felly showing a modified construction of the track and chain carriers adapted to be applied thereto;

Fig. 14 is a detail View as applied to trucks;

Fig. 15 is anenlarged `broken sectional view of the elly of a truck, broken view of one of the spokes, sectional view of the T- shaped tracks, View of two of on the tracks, chains carried by the carriers; and

Fig. 16 is an enlarged detail upper plan View of one of the chain carriers. l

Referring to Figs. 1, 2, 4 and 6, the track is of circular construction and angularin cross section, comprising the vertical flange portion 1 and the horizontal flange portion 2 provided with the circumferentially an ranged rib 3. the outside and inside of the felly 4, and each of the spacing ring the chain carriers mounted Patented Jam.. 11d, 11919.

and spacing rings, also a' As there is a track located on esI and broken view of the tread a duplicate of the other, and on each track is mounted achain carrier of the same construction, these several duplicate elements will be designated by the same gures of reference.

The chain carriers are composed of the two sections aandh. The .former lies between the rib 3 and the flange 1 of the track, and the lattersection on the outside of said rib, both bearing on the horizontal flange portion 2 of the track and adapted to rotate freely thereon. The chain carrier sections are connected together by the bolts 7 carrying nuts 8. These bolts are arranged at suitable intervals to properly support the close relation between the sections. 0n each bolt is mounted a spring 9 whose normal pressure is outward so that, when the nuts 8 are released. the outer section 6 will be carried awa-y from the inner section 5.

The reinforced portion 10 of each chain carrying section is provided to afford suf- -ficient support for the mechanism relating to Leonesa with the grooves of the .opposite section, and one end to the carriers as follows: lifl 1s the this relation is maintained by the before mentioned retaining bolts 7. In each ci the reinforced portions ot' the sections is provided the angular openings 16, Fig. 5, to freely admitA the gripping- `fingers 17, Fig. 2, having grooves 18 formed in their inner ends, Fig. 3, adapted to embrace theneck por/tion i3 of the chain connections under the impulse of the springs4 19. 2O is a rod attached to each finger and projecting without the chainv carrier' sections to release the chain connections.

in connecting the tread chain sections ll to the tire 2l, one/'of the connections`l2 is passed through the grooves 1.5 of the sections 5 and 6, forcing the gripping lingers l? apart until they snap about the neck ot' the connection. The opposite end of the chain is then passed over the tire, and is attached totheopposite chain carrier as shown in Fig. o.

"lhe tracksiior the chain carriers can be secured to any suitable part of the wheel. ln the views shown they are secured to the telly ei by'crews 22.

in Fig. T is shown a modified'construction ci one of the chain connections adapted to arrest the lateral sway of a car on. slippery roads. ln this construction, the arrester 23 is adapted to occupy a position between each end of a tread chain and the chain connectionslc the end of a chain being attached to the staple 2li. rEhe elongation 25 of the chain connection is provided with the head 26 located at the bottom of the recess 27 or" the arrester. 28 is a spring located between the plate 29 and said head. The lower end ot' the arrester has the sharp points 29a adapted to. normally occupy a position an inch or sol above the road bed when the tire is equipped with 4the tread chains. A sudden side sway of' a car will tend to draw down the arrester until it engages the road bed, and the spring; 28 will release it from the road bed as Soon as the danger is past.

lt will be readily seen that, as the traction oi' the wheel gradually shifts the position oi the chain sections around the tire, the chain carriers will rotate on the track in keepingwith the movementof the chains. The ends of the chains being anchored to the carriers an equal distance apart will always maintain this spaced relation whatever the position of the carriers may be.

The same general idea of the track and chain carriers is carried out in the modified construction shown in views 8 to 12, inclur sive. This construction has the cireularly arranged angular tracks 30 /sccured 'to the outside and inside of the telly 4 by screws 3l, and the circularly arranged angular chain carriers 32 32a are mounted to rotate in these tracks. y ln this construction the chain sections are-permanently attached by chain section permanently secured to carrier by the link and passes overthc tire 21 and is ten'lporarily attached to the staple 34 oi the opposite carrier 32a. Chain section 1lb is permanently secured to carrier 322L by the lin-k 85, and temporarily to the staple 36 of the opposite carrier 32. The swivels 3T to which these links are secured, turn freely -in the carriers and thus avoid cramping the chain sections.

Openings 88 are provided in the tracks at the same distance apart asthe swivels 37. `lWhen not in use, the chain sections are drawn into the pocket 39-Figz 9a formed by pushing the chain carriers back as shown. When the chain sections are to be used, the chain carriers are rotated until the anchored ends of the chain sections are brought opposite these openings as shown in Fig. l0, then the carriers are pushed outward to carry these anchored ends outside ot the tracks and the sections are withdrawn from the pockets, by turningV the carrier in the direction of arrow YJ-Fig 1l, and are drawn into the pockets by reversing; the movement of the carrier, riz: in the direction of arrow c Fig. l2.

Astiil 'further modified track and chain carrier construction particularly adapted for heavy trucks is shown inviews 13 to 1G inelusive. ln this arranger-nent, the cireumiiereutial tracks Zl() are T-shaped and are secured to the inside of the telly il and on each side ci the spoke el by screws 42. On the part 40a of the tracks are freely mounted at intervals 'the chain carriers 43 having staples 43 to which the free ends of the chain sections l1c are temporarily attached. These multiple chain carriers are maintained a proper working distance apart by the spacing ring 414 having the notches 45. These rings are located on the inside of the tracks-Fig. 15, and the inner overhanging lips 46 of the carriers enter the notches of the spacing rings. 47 are outer overhanging lips of the carriers held in operative position by the bolts 48. By means of these movable lips any one of the carriers may be removed from the track by simply swinging this lip to one side after removingthe tack from the folly.

t will be observed that in all the views presented, the saine general idea of chain carriers and tracks on Which they have circumferential 'travel is carried out, and also pen dent of riers having their inner sides engaged with opposite sides of the ribs, means to connect the Sectione oi" the carriers to each other, and chains connected to the carriers and extending across the Wheel tread.

'In combination with a vehicle Wheel, a circuiar track secured to each `side of the Wheel, a circular chain carrier rotatable on each track and composed of two sections, nieans 'for connecting the scctions, chains traversing the Wheel tread, and means indeconnecting means for securis of the chains to the respective ing the ein carriers.

3. A device i'or inotor vehicle Wheel@ coinprisinga circular-ly arranged track secured to a wheel and on each Side thereof, a circular two section chain carrier journaled on each track adapted to make a complete revolution thereon, spring actuated -ggyripping fingers operatively mounted in each carrier section, chain Sectionl and nieans on each end thereof to interlock with the gripping fingers located on each side of the Wheel.

el. il device for motor vehicle Wheels coinprising a circularly arranged track secured to the Wheels and on. each side thereof, carriers mounted to have a free movement on the tracks,chain sections permanentlyv connected by one end to the carrier on one track and removably connected to the opposite carrier, and means for housing the chain sections when one end thereof is free.

' In combination with a vehicle Wheel, a vcircular track secured to the Wheel at each side thereof and entendii'lg outwardly from the Wheel sides, hollow chain carriers having sockets rotatably mounted on the tracks, chains extending across the Wheel treads, means connected to the chains and engaging in said sockets of the carriers so as to project within the interiors of the carriers releasable and means located Within the carriers to engage said incansof the chains to anchor the latter to the carriers.

6. In combination with a vehicle Wheel, a circular member on each side thereof having a vertical part and a horizontal track, a cn'n cular rib on each track, chain carriers rotatable on the tracks and formed to receive the ribs so as to be held thereby in close relation to the vertical parts of the members, and chains 'traversing the Wheel tread and secured t the carriers.

In testimony whereof I aiix my signature.

DAVE BLUMBERG. 

